2 Books Detail Sex-a-Day Vows

Can non-stop sex revitalize a marriage? Two American couples have books coming out that chronicle their attempts to sex it up, the New York Times reports. Just Do It records 101 nights of romance intended to offset a couple's boredom in Boulder, Colo., while 365 Nights documents a year of whoopee that a Bible-loving Republican wife gave her husband in Charlotte, NC.

“This is something no one else would give him,” said Charla Muller. “It didn’t cost a lot of money. It was highly memorable. It met all the criteria for a really great gift.” For Annie Brown of Boulder, her competitive streak kept the couple on track. “I’m not a quitter,” she said. “The night he had vertigo, I said, ‘I’m sorry, guy, but you’ve got to keep going.’" (More sex stories.)